Preseed and so many issues

So my husband and I used preseed last cycle. Obviously I’m not pregnant I’m not ovulating yet but I think I’m fertile ( lh test getting darker) he usedddd a shit ton today. ( I don’t know why) but I don’t want to use it anymore I’ve heard success stories. But I’ve also heard of ectopic pregnancies, miscarriages. And i don’t want to use it anymore and if I do get pregnant this cycle I’d be anxiety ridden the whole time something is severely wrong 😭😭😭